255121335730 has 8 divisors (see below), whose sum is σ = 459218404332. Its totient is φ = 102048534288.

The previous prime is 255121335713. The next prime is 255121335751. The reversal of 255121335730 is 37533121552.

It can be written as a sum of positive squares in 2 ways, for example, as 254248901361 + 872434369 = 504231^2 + 29537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 255121335730.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12756066777 + ... + 12756066796.

Almost surely, 2^255121335730 is an apocalyptic number.

255121335730 is a deficient number, since it is larger than the sum of its proper divisors (204097068602).

255121335730 is a wasteful number, since it uses less digits than its factorization.

255121335730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25512133580.

The product of its (nonzero) digits is 94500, while the sum is 37.

The spelling of 255121335730 in words is "two hundred fifty-five billion, one hundred twenty-one million, three hundred thirty-five thousand, seven hundred thirty".